A certain community has 100 children out of whom 28 are immunised against
measles. 2 of them acquired measles simultaneously. Subsequently 14 get measles.
Assuming the efficacy of the vaccine to be 100%. What is the secondary attack
rate?
A. 5%
B. 10%
C. 20%
D. 21.5%
Ans. C
0 comments:
Post a Comment